US11287031B2 - Apparatus and method for shift control in vehicle - Google Patents
Apparatus and method for shift control in vehicle Download PDFInfo
- Publication number
- US11287031B2 US11287031B2 US16/938,326 US202016938326A US11287031B2 US 11287031 B2 US11287031 B2 US 11287031B2 US 202016938326 A US202016938326 A US 202016938326A US 11287031 B2 US11287031 B2 US 11287031B2
- Authority
- US
- United States
- Prior art keywords
- vehicle
- target
- speed
- controller
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 32
- 230000015654 memory Effects 0.000 claims description 14
- 230000000994 depressogenic effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
- B60W40/076—Slope angle of the road
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H59/22—Idle position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/60—Inputs being a function of ambient conditions
- F16H59/66—Road conditions, e.g. slope, slippery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
- B60W2510/0647—Coasting condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/12—Brake pedal position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/15—Road slope, i.e. the inclination of a road segment in the longitudinal direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
- B60W2710/0655—Coasting condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/103—Speed profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/18—Propelling the vehicle
- B60Y2300/18008—Propelling the vehicle related to particular drive situations
- B60Y2300/18066—Coasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H2059/186—Coasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/60—Inputs being a function of ambient conditions
- F16H59/66—Road conditions, e.g. slope, slippery
- F16H2059/663—Road slope
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0227—Shift map selection, i.e. methods for controlling selection between different shift maps, e.g. to initiate switch to a map for up-hill driving
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
Definitions
- the present disclosure relates an apparatus and a method for shift control in a vehicle.
- coasting In general, to uniformly maintain the speed of a vehicle on a downhill road, a driver drives the vehicle without depressing an accelerator pedal and a brake pedal of the vehicle (hereinafter, referred to as coasting).
- coasting is used as a concept including a turned-on state of a clutch as well as a turned-off state of the clutch (a state in which the vehicle is in N gear).
- the driver has to depress the accelerator pedal when the speed of the vehicle is reduced by an engine brake, and the driver has to depress the brake pedal when the speed of the vehicle is increased due to a steep slope of the downhill road.
- the present disclosure relates an apparatus and a method for shift control in a vehicle. Particular embodiments relate to a technology for uniformly maintaining the speed of a vehicle by performing shift control in the vehicle when the vehicle coasts on a downhill road.
- An embodiment of the present disclosure provides a shift control apparatus and method for uniformly maintaining the speed of a vehicle without a driver's manipulation of an accelerator pedal or a brake pedal, by performing shift control in the vehicle, based on speed profiles corresponding to respective gears of the vehicle for each of a plurality of downhill slopes, when the vehicle coasts on a downhill road.
- an apparatus for shift control in a vehicle includes storage that stores speed profiles corresponding to respective gears of the vehicle for each of a plurality of downhill slopes and a controller that performs the shift control in the vehicle based on the speed profiles, when the vehicle coasts on a downhill road.
- the controller may set at least one target position on the downhill road and may perform the shift control in the vehicle to satisfy a target speed at the target position.
- the controller may set a target distance, based on a current speed of the vehicle and may set a target position corresponding to the target distance.
- the controller may classify the current speed of the vehicle into three areas A 1 , A 2 , and A 3 , may set the target distance to a first value in the area A 1 , may set the target distance in proportion to the current speed of the vehicle in the area A 2 , and may set the target distance to a second value in the area A 3 .
- the controller may calculate an average value of vehicle speeds for an initial reference period of time while the vehicle coasts, and may set the target speed by adding an error range to the average value.
- the controller may start to set the target speed when a vehicle speed change is less than a reference vehicle speed change.
- the controller may determine a gear satisfying the target speed at the target position, based on the speed profiles, when the vehicle coasts on the downhill road.
- the controller may determine a lower one of the determined gear and a pattern gear to be a final gear.
- the controller may determine the gear satisfying the target speed at the target position, by periodically determining whether the gear satisfying the target speed at the target position is present, while the vehicle coasts on the downhill road.
- the apparatus may further include an Accelerator Position Sensor (APS) that measures an APS value representing a degree to which an accelerator pedal included in the vehicle is depressed, a Brake Position Sensor (BPS) that measures a BPS value representing a degree to which a brake pedal included in the vehicle is depressed, and an information collection device that collects a slope of a road ahead on which the vehicle travels.
- APS Accelerator Position Sensor
- BPS Brake Position Sensor
- the controller may determine the road ahead to be a downhill road when the slope collected by the information collection device is less than a reference slope.
- the controller may determine that the vehicle coasts when the APS value is equal to 0 and the BPS value is equal to 0.
- a method for shift control in a vehicle includes storing, by storage, speed profiles corresponding to respective gears of the vehicle for each of a plurality of downhill slopes and performing, by a controller, the shift control in the vehicle, based on the speed profiles, when the vehicle coasts on a downhill road.
- the performing of the shift control in the vehicle may include setting at least one target position on the downhill road and determining a gear satisfying a target speed at the target position.
- the setting of the target position may include setting a target distance, based on a current speed of the vehicle and setting a target position corresponding to the target distance.
- the setting of the target distance may include classifying the current speed of the vehicle into three areas A 1 , A 2 , and A 3 , setting the target distance to a first value in the area A 1 , setting the target distance in proportion to the current speed of the vehicle in the area A 2 , and setting the target distance to a second value in the area A 3 .
- the determining of the gear may include calculating an average value of vehicle speeds for an initial reference period of time while the vehicle coasts and setting the target speed by adding an error range to the average value.
- the determining of the gear may include determining a lower one of the determined gear and a pattern gear to be a final gear.
- the determining of the gear may include, when the gear satisfying the target speed at the target position is not present, determining the gear satisfying the target speed at the target position, by periodically determining whether the gear satisfying the target speed at the target position is present, while the vehicle coasts on the downhill road.
- the performing of the shift control in the vehicle may include determining a road to be a downhill road, when a slope of the road on which the vehicle travels is less than a reference slope and determining that the vehicle coasts, when a driver does not manipulate an accelerator pedal and a brake pedal.
- FIG. 1 is a view illustrating a configuration of a shift control apparatus for a vehicle according to an embodiment of the present disclosure
- FIG. 2 is an exemplary view illustrating speed profiles provided in the shift control apparatus for the vehicle, according to an embodiment of the present disclosure
- FIG. 3 is a view illustrating a target distance depending on the current speed of the vehicle that is provided in the shift control apparatus for the vehicle, according to an embodiment of the present disclosure
- FIG. 4 is a view illustrating a process in which a controller included in the shift control apparatus for the vehicle determines a gear when the vehicle coasts on a downhill road, according to an embodiment of the present disclosure
- FIG. 5 is a detailed view illustrating a process in which the controller included in the shift control apparatus for the vehicle determines a gear when the vehicle coasts on a downhill road, according to an embodiment of the present disclosure
- FIG. 6 is a flowchart illustrating a shift control method for a vehicle according to an embodiment of the present disclosure.
- FIG. 7 is a block diagram illustrating a computing system for executing the shift control method for the vehicle, according to an embodiment of the present disclosure.
- FIG. 1 is a view illustrating a configuration of a shift control apparatus for a vehicle according to an embodiment of the present disclosure.
- the shift control apparatus 100 for the vehicle may include storage 10 , a vehicle speed sensor 20 , an Accelerator Position Sensor (APS) 30 , a Brake Position Sensor (BPS) 40 , an information collection device 50 , and a controller 60 .
- the components may be combined together to form one entity or some of the components may be omitted.
- the storage 10 may store various logics, algorithms, and programs required in a process of performing shift control in the vehicle, based on speed profiles corresponding to respective gears of the vehicle for each of a plurality of downhill slopes, when the vehicle coasts on a downhill road.
- the storage 10 may store the speed profiles corresponding to the respective gears of the vehicle for each of the downhill slopes, the speed profiles being applied when the vehicle coasts on a downhill road.
- the storage 10 may store speed profiles corresponding to the respective gears of the vehicle for a first slope.
- FIG. 2 is an exemplary view illustrating speed profiles provided in the shift control apparatus for the vehicle, according to an embodiment of the present disclosure.
- the vertical axis represents initial speed
- the horizontal axis represents coasting distance.
- the storage 10 may store a reference slope (e.g., ⁇ 5%) and a reference distance (e.g., 300 m) as conditions for starting shift control in the vehicle.
- a reference slope e.g., ⁇ 5%
- a reference distance e.g., 300 m
- the storage 10 may store a reference vehicle speed change (e.g., 10 KPH/sec or 2.8 m/sec).
- a reference vehicle speed change e.g. 10 KPH/sec or 2.8 m/sec.
- the storage 10 may store a map in which gears (pattern gears) corresponding to patterns are recorded.
- the map is a well-known and common technology generally applied to a vehicle and is not the subject matter of embodiments of the present disclosure. Therefore, detailed description thereof will be omitted.
- the storage 10 may store a target distance (e.g., 100 m) that represents the distance from the current position of the vehicle to a target position.
- the target distance may be varied depending on the current speed of the vehicle.
- the storage 10 may store a reference speed range (e.g., 40 KPH to 150 KPH) of the vehicle.
- the storage 10 may include at least one type of storage medium among memories of a flash memory type, a hard disk type, a micro type, and a card type (e.g., a Secure Digital (SD) card or an eXtream Digital (XD) card) and memories of a Random Access Memory (RAM) type, a Static RAM (SRAM) type, a Read-Only Memory (ROM) type, a Programmable ROM (PROM) type, an Electrically Erasable PROM (EEPROM) type, a Magnetic RAM (MRAM) type, a magnetic disk type, and an optical disk type.
- a card type e.g., a Secure Digital (SD) card or an eXtream Digital (XD) card
- RAM Random Access Memory
- SRAM Static RAM
- ROM Read-Only Memory
- PROM Programmable ROM
- EEPROM Electrically Erasable PROM
- MRAM Magnetic RAM
- the vehicle speed sensor 20 may measure the speed of the vehicle. In an embodiment of the present disclosure, it has been exemplified that the speed of the vehicle is directly measured through the vehicle speed sensor 20 . However, in another embodiment, the speed of the vehicle may be obtained through a vehicle network.
- the vehicle network may include a Controller Area Network (CAN), a Local Interconnect Network (LIN), FlexRay, Media Oriented Systems Transport (MOST), Ethernet, or the like.
- the APS 30 is a sensor for measuring the degree (hereinafter, referred to as the APS value) to which the accelerator pedal included in the vehicle is depressed.
- the APS value is 0%, and when the driver fully depresses the accelerator pedal, the APS value is 100%.
- the APS value is directly measured through the APS 30 .
- the APS value may be obtained through the vehicle network.
- the BPS 40 is a sensor for measuring the degree (hereinafter, referred to as the BPS value) to which the brake pedal included in the vehicle is depressed.
- the BPS value When the driver does not manipulate the brake pedal, the BPS value is 0%, and when the driver fully depresses the brake pedal, the BPS value is 100%.
- the BPS value is directly measured through the BPS 40 .
- the BPS value may be obtained through the vehicle network.
- the information collection device 50 is a module that operates in conjunction with a navigation device 200 included in the vehicle.
- the information collection device 50 may collect, from the navigation device 200 , current position information (e.g., GPS information) of the vehicle and the slope of a road ahead on which the vehicle travels.
- current position information e.g., GPS information
- the information collection device 50 may additionally collect, from the navigation device 200 , curvature information of the road ahead, the current speed of the vehicle, and a target position corresponding to a target distance.
- the information collection device 50 may obtain information about the distance between the current position of the vehicle and the target position from the navigation device 200 in real time.
- the controller 60 performs overall control to enable the components to normally perform functions thereof.
- the controller 60 may be implemented in the form of hardware or software, or in a combination thereof.
- the controller 60 may preferably be implemented with, but is not limited to, a microprocessor.
- the controller 60 may perform various controls in a process of performing shift control in the vehicle, based on the speed profiles corresponding to the respective gears of the vehicle for each downhill slope, when the vehicle coasts on a downhill road.
- the controller 60 may control the information collection device 50 to obtain, from the navigation device 200 , the slope of a road ahead on which the vehicle travels. The controller 60 may determine whether the slope obtained by the information collection device 50 exceeds the reference slope.
- the controller 60 may determine whether the vehicle coasts or not, based on an APS value measured by the APS 30 and a BPS value measured by the BPS 40 . That is, when the APS value measured by the APS 30 is equal to 0 and the BPS value measured by the BPS 40 is equal to 0, the controller 60 may determine that the vehicle coasts.
- the controller 60 may determine whether the vehicle speed measured by the vehicle speed sensor 20 is within the reference speed range.
- the controller 60 may start to set a target speed when the vehicle speed change measured by the vehicle speed sensor 20 is less than the reference vehicle speed change.
- the controller 60 may set a target distance, based on a map in which target distances are recorded based on the current speed of the vehicle as illustrated in FIG. 3 .
- FIG. 3 is a view illustrating a target distance depending on the current speed of the vehicle that is provided in the shift control apparatus for the vehicle, according to an embodiment of the present disclosure.
- the controller 60 may classify the current speed V c of the vehicle into three areas A 1 , A 2 , and A 3 and may set target distances DT corresponding to the areas A 1 , A 2 , and A 3 .
- the area A 1 may be an area in which the current speed of the vehicle is lower than V 1 .
- a target distance may be set to one constant value.
- the area A 2 may be an area in which the current speed of the vehicle is higher than or equal to V 1 and lower than V 2 .
- a target distance may be set to a value corresponding to the current speed of the vehicle.
- the area A 3 may be an area in which the current speed of the vehicle is higher than or equal to V 2 .
- a target distance may be set to one constant value.
- the controller 60 may set a target speed V T of the vehicle that is desired to be maintained at a target position. That is, the controller 60 may set the target speed V T at the target position by calculating the average of vehicle speeds for a reference period of time (e.g., 1 second) from the time when the vehicle is determined to coast and applying an error range for control stabilization (computational complexity reduction) to the calculated average. For example, when the average vehicle speed is 80 KPH and the error range is 3 KPH, the controller 60 may set the target velocity V T at the target position to 77 KPH to 83 KPH.
- a reference period of time e.g. 1 second
- FIG. 4 is a view illustrating a process in which the controller included in the shift control apparatus for the vehicle determines a gear when the vehicle coasts on a downhill road, according to an embodiment of the present disclosure.
- the vehicle starts to coast on a downhill road.
- the vehicle speed at the current position is V c
- a target speed V T at a target position is set.
- the controller 60 detects a gear satisfying the target speed V T at the target position, based on the speed profiles stored in the storage 10 , the speed profiles corresponding to the respective gears of the vehicle for each downhill slope.
- the gear satisfying the target speed V T at the target position is seventh gear. Accordingly, when the vehicle is in seventh gear at the current position, the controller 60 maintains the current gear, and when the vehicle is not in seventh gear at the current position, the controller 60 controls a transmission 300 to be shifted into seventh gear.
- the controller 60 may periodically (e.g., with a period of 10 ms, 100 ms, or the like) determine whether a gear satisfying the target speed V T at the target position is present, while the vehicle coasts on the downhill road.
- FIG. 5 is a detailed view illustrating a process in which the controller included in the shift control apparatus for the vehicle determines a gear when the vehicle coasts on a downhill road, according to an embodiment of the present disclosure.
- the controller 60 periodically determines whether a gear satisfying the target speed V T at the target position is present.
- a gear (a predicted gear) satisfying the target speed V T at the target position is eighth gear.
- the controller 60 may control the transmission 300 to be shifted into eighth gear at point 510 (the shift position). At this time, the controller 60 may set a lower one of the predicted gear and a pattern gear to the final gear.
- the controller 60 may perform the above-described process while consistently updating the target position depending on the target distance, thereby uniformly maintaining the speed of the vehicle when the vehicle coasts on the downhill road.
- a shift control method for a vehicle has to be distinguished from a technology for performing shift control in a vehicle such that the current speed of the vehicle simply coincides with a target speed, without setting a target position depending on a target distance.
- the aforementioned technology very frequently performs the shift control to allow the current speed of the vehicle to coincide with the target speed. Therefore, the technology causes a failure in a transmission and reduces the lifetime of the transmission. As a result, the technology is difficult to apply to an actual vehicle.
- FIG. 6 is a flowchart illustrating the shift control method for the vehicle according to an embodiment of the present disclosure.
- the storage 10 stores speed profiles corresponding to respective gears of the vehicle for each of a plurality of downhill slopes ( 601 ).
- the controller 60 performs shift control in the vehicle, based on the speed profiles ( 602 ).
- FIG. 7 is a block diagram illustrating a computing system for executing the shift control method for the vehicle, according to an embodiment of the present disclosure.
- the computing system 1000 may include at least one processor 1100 , a memory 1300 , a user interface input device 1400 , a user interface output device 1500 , storage 1600 , and a network interface 1700 , which are connected with each other via a bus 1200 .
- the processor 1100 may be a Central Processing Unit (CPU) or a semiconductor device that processes instructions stored in the memory 1300 and/or the storage 1600 .
- the memory 1300 and the storage 1600 may include various types of volatile or non-volatile storage media.
- the memory 1300 may include a ROM (Read Only Memory) 1310 and a RAM (Random Access Memory) 1320 .
- the operations of the method or the algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware or a software module executed by the processor 1100 , or in a combination thereof.
- the software module may reside on a storage medium (that is, the memory 1300 and/or the storage 1600 ) such as a RAM, a flash memory, a ROM, an EPROM, an EEPROM, a register, a hard disk, a removable disk, or a CD-ROM.
- the exemplary storage medium may be coupled to the processor 1100 , and the processor 1100 may read information out of the storage medium and may record information in the storage medium.
- the storage medium may be integrated with the processor 1100 .
- the processor 1100 and the storage medium may reside in an Application Specific Integrated Circuit (ASIC).
- the ASIC may reside within a user terminal.
- the processor 1100 and the storage medium may reside in the user terminal as separate components.
- the shift control apparatus and method for the vehicle when the vehicle coasts on a downhill road, performs shift control in the vehicle, based on the speed profiles corresponding to the respective gears of the vehicle for each downhill slope, thereby uniformly maintaining the speed of the vehicle without the driver's manipulation of the accelerator pedal and the brake pedal.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2019-0164173 | 2019-12-10 | ||
KR1020190164173A KR20210073706A (en) | 2019-12-10 | 2019-12-10 | Shift control device and shift control method for vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
US20210172515A1 US20210172515A1 (en) | 2021-06-10 |
US11287031B2 true US11287031B2 (en) | 2022-03-29 |
Family
ID=76209666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/938,326 Active US11287031B2 (en) | 2019-12-10 | 2020-07-24 | Apparatus and method for shift control in vehicle |
Country Status (2)
Country | Link |
---|---|
US (1) | US11287031B2 (en) |
KR (1) | KR20210073706A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220142602A (en) | 2021-04-14 | 2022-10-24 | 현대자동차주식회사 | Shift control device and shift control method for vehicle |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5484350A (en) * | 1993-08-31 | 1996-01-16 | Honda Giken Kogyo Kabushiki Kaisha | Control system for vehicle automatic transmission |
US5544053A (en) * | 1993-06-11 | 1996-08-06 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | System and method for the control of shifting of vehicle automatic transmission |
JP4849056B2 (en) | 2007-11-08 | 2011-12-28 | トヨタ自動車株式会社 | Driving force control device |
US20150149052A1 (en) | 2013-11-26 | 2015-05-28 | Hyundai Motor Company | System for controlling shift of vehicle |
JP2017223324A (en) * | 2016-06-17 | 2017-12-21 | 株式会社Subaru | Control device of continuously variable transmission |
KR101886535B1 (en) | 2016-12-23 | 2018-08-07 | 현대 파워텍 주식회사 | Shift control method continuously variable transmission on downhil |
US10363929B2 (en) * | 2014-11-27 | 2019-07-30 | Isuzu Motors Limited | Vehicle automatic travel control device and vehicle automatic travel method |
-
2019
- 2019-12-10 KR KR1020190164173A patent/KR20210073706A/en active Search and Examination
-
2020
- 2020-07-24 US US16/938,326 patent/US11287031B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5544053A (en) * | 1993-06-11 | 1996-08-06 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | System and method for the control of shifting of vehicle automatic transmission |
US5484350A (en) * | 1993-08-31 | 1996-01-16 | Honda Giken Kogyo Kabushiki Kaisha | Control system for vehicle automatic transmission |
JP4849056B2 (en) | 2007-11-08 | 2011-12-28 | トヨタ自動車株式会社 | Driving force control device |
US20150149052A1 (en) | 2013-11-26 | 2015-05-28 | Hyundai Motor Company | System for controlling shift of vehicle |
KR101558350B1 (en) | 2013-11-26 | 2015-10-08 | 현대자동차 주식회사 | Apparatus for controlling transmission of vehicle |
US10363929B2 (en) * | 2014-11-27 | 2019-07-30 | Isuzu Motors Limited | Vehicle automatic travel control device and vehicle automatic travel method |
JP2017223324A (en) * | 2016-06-17 | 2017-12-21 | 株式会社Subaru | Control device of continuously variable transmission |
KR101886535B1 (en) | 2016-12-23 | 2018-08-07 | 현대 파워텍 주식회사 | Shift control method continuously variable transmission on downhil |
Non-Patent Citations (1)
Title |
---|
JP 2017223324 machine translation, filed Jun. 14, 2021 (Year: 2021). * |
Also Published As
Publication number | Publication date |
---|---|
US20210172515A1 (en) | 2021-06-10 |
KR20210073706A (en) | 2021-06-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109774715B (en) | Lane changing method and device for automatic driving vehicle | |
US8996269B2 (en) | Vehicle speed control apparatus, vehicle speed control system comprising the same and vehicle speed control method | |
US9090279B2 (en) | Method and device for determining a transversal controller parameterization for transversal control of a vehicle | |
US10661776B1 (en) | Apparatus and method for controlling transmission of vehicle | |
CN110967026B (en) | Lane line fitting method and system | |
JP7147442B2 (en) | map information system | |
US10583841B2 (en) | Driving support method, data processor using the same, and driving support system using the same | |
JP7103161B2 (en) | Map information system | |
JP6522255B1 (en) | Behavior selection apparatus, behavior selection program and behavior selection method | |
JP6527070B2 (en) | Traveling control device | |
US20200164888A1 (en) | Driving Assistance Method and Driving Assistance Device | |
US20170355370A1 (en) | Vehicle control system | |
JP2004351994A (en) | Car speed control device and program | |
EP3725609A1 (en) | Calibrating method and device for vehicle anti-collision parameters, vehicle controller and storage medium | |
US11287031B2 (en) | Apparatus and method for shift control in vehicle | |
CN116834733A (en) | Vehicle driving early warning method and device, storage medium and electronic equipment | |
JP5407913B2 (en) | Drive control device | |
CN100494899C (en) | Forward road information transmission system and method | |
JP7302411B2 (en) | Driving skill evaluation device | |
US10807602B2 (en) | Evaluating apparatus | |
US20220396264A1 (en) | Vehicle for tracking speed profile and control method thereof | |
US11046181B2 (en) | Apparatus and method for controlling transmission of vehicle | |
CN111880521A (en) | Vehicle control method and device, vehicle and electronic equipment | |
US11572946B2 (en) | Shift control device and shift control method for vehicle | |
CN116588078B (en) | Vehicle control method, device, electronic equipment and computer readable storage medium |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JEON, BYEONG WOOK;JEONG, DONG HOON;KOOK, JAE CHANG;AND OTHERS;REEL/FRAME:053306/0001 Effective date: 20200623 Owner name: KIA MOTORS CORPORATION, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JEON, BYEONG WOOK;JEONG, DONG HOON;KOOK, JAE CHANG;AND OTHERS;REEL/FRAME:053306/0001 Effective date: 20200623 |
|
FEPP | Fee payment procedure |
Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |